Quantity textbox

[ckehrer]

Thanks in advance,

 

I'm currently working on a shopping cart where I have a quantity textbox field with a default of 0 when the page loads.

I want to be able to override the default value when a user enters a number inside that field, and have that value passed in a query string to the checkout page.

[Bricktop]

Hi ckehrer,

 

You need to give the textbox a "name=" attribute and then turn the $_POSTed value from that field into a variable and then pass to the database or whatever.

 

For example:

 

<input name="quantity" value="0" />

<?php

$quantity = $_POST[quantity];

?>

 

Hope that makes sense!

[ckehrer]

Hi thanks for the quick reply. Here is a little bit of my code.

 

<?php

 

$quantity = 0;

 

?>

 

<td><input type='text' size='2' name='quantity' value='<? echo $quantity; ?>' /></td>

 

I'm setting a default variable to zero then would like to pass via query string using $_GET i.e if a user enters 5 then I want to override the default with 5. Is this possible?

 

Thanks

[gevans]

<?php
$quantity = isset($_GET['quantity']) ? (int) $_GET['quantity'] : 0;

[ldougherty]

this should already be configured, how is your form data being sent via GET or POST?

 

On the line that says <FORM METHOD=??> what is the method?

 

If it is POST then you should retrieve the value as $_POST['quantity'] or if it is GET then you should retrieve the value as $_GET['quantity']

[ckehrer]

I'm using $_GET for my form. I think the problem might be in my loop here is a sample of my code. I'm dynamically populating a products page with all the products and prices from an array strProducts.

<?

$i = 0;

while(list($key,$value) = each($strProducts)) {	// Populate page with array of products and prices

$i++;	
$quantity = isset($_GET['quantity']) ? (int) $_GET['quantity'] : 0;
?>	

	<tr>
		<td><input type='hidden' name='product' value='<? echo $key; ?>' /><? echo $key; ?></td>	
		<td><input type='hidden' name='price' value='<? echo $value; ?>' /><? echo $value; ?></td>
		<td><input type='text' size='2' name='quantity' value='<? echo $quantity; ?>' /></td>
		<input type='hidden' name='itemID' value='<? echo $i; ?>'>
		<td><a style='text-decoration: none;' id="add" style='margin-right: 15px;'; href='/checkout.php?product=<? echo $key; ?>&price=<? echo $value; ?>&itemID=<? echo $i; ?>&quantity=<? echo $quantity; ?>'><input type='submit' name='btnSubmit' value='Add to cart' /></a></td>	
		<input type='hidden' name='<? echo session_id(); ?>' />	<?				 

}		
?>	

[gevans]

Are you displaying severall quantity input fields? If noty why are you using a loop?

[ckehrer]

Yes I have a quantity textbox next to each individual product.

[gevans]

In which case you need to add the name attribute of quantity as an array

 

name="quantity[]"

[ckehrer]

Thanks everybody for all the help. I'm still only able to pass the default value but I'll keep working on it.

[ckehrer]

Please help. I've tried a combination of of altering the query string, but I still keep passing the default value of 0 even if I enter a value in the text box field. I'm using $quantity = $_GET['quantity']; on the checkout page to receive the values passed.

 

Again thanks everyone for your help.

 

<?php

$i = 0;

while(list($key,$value) = each($strProducts)) {	// Populate page with array of products and prices

$i++;	
$quantity = isset($_GET['quantity']) ? (int) $_GET['quantity'] : 0;
?>	

	<tr>
		<td><input type='hidden' name='product' value='<? echo $key; ?>' /><? echo $key; ?></td>	
		<td><input type='hidden' name='price' value='<? echo $value; ?>' /><? echo $value; ?></td>
		<td><input type='text' size='2' name='quantity[]' value='<? echo $quantity; ?>' /></td>
		<input type='hidden' name='itemID' value='<? echo $i; ?>'>
		<td><a style='text-decoration: none;' id="add" style='margin-right: 15px;'; href='/checkout.php?product=<? echo $key; ?>&price=<? echo $value; ?>&itemID=<? echo $i; ?>&quantity=<? echo $quantity; ?>'><input type='submit' name='btnSubmit' value='Add to cart' /></a></td>	
		<input type='hidden' name='<? echo session_id(); ?>' />	<?				 

}		
?>